changing rear diff fluid...
Senior Member
Joined: Apr 2000
Posts: 2,854
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From: NY/NJ
Here's what Dave said from Red Line Oil.
<<Ford uses a higher viscosity in the Ford or Dana 80 differentials, those would take the Red Line 75W140, otherwise the 75W90 would be recommended.
Regards, Dave
Red Line Oil>>
The guys that are using Red Line....what weight did you go with?
<<Ford uses a higher viscosity in the Ford or Dana 80 differentials, those would take the Red Line 75W140, otherwise the 75W90 would be recommended.
Regards, Dave
Red Line Oil>>
The guys that are using Red Line....what weight did you go with?